Data/hora: 11/06/2024 20:06:19

Biblioteca(s): 	Embrapa Pantanal.	
Data corrente: 	17/07/2014	
Data da última atualização: 	11/02/2015	
Autoria: 	EVANS, T. L.; COSTA, M.; TOMAS, W. M.; CAMILO, A. R.	
Afiliação: 	University of Victoria; University of Victoria; WALFRIDO MORAES TOMAS, CPAP.	
Título: 	Large-scale habitat mapping of the Brazilian Pantanal wetland: A synthetic aperture radar approach.	
Ano de publicação: 	2014	
Fonte/Imprenta: 	Remote Sensing of Environment, v. 155, p. 89-108, 2014.	
ISSN: 	0034-4257	
Idioma: 	Inglês	
Conteúdo: 	This study uses 50 m spatial resolution, dual-season, HH and HV L-band ALOS/PALSAR, and HH and HV C-band RADARSAT-2 data, as well as a comprehensive set of ground reference points, to map the diverse habitats of the hydrologically variant subregions of the Pantanal by using a hierarchical object based image analysis approach. First, mean and standard deviation values of image object training sites were evaluated, and used as the basis for forming preliminary land cover class thresholds for each subregion. Then, acombination of additional refined thresholds, hierarchical rules, and a supervised nearest neighbor algorithm (eCognition Feature Space Optimization) employing several features as primary inputs (mean, standard deviation, seasonal change detection, brightness, maximum difference, area, roundness, brightness, compactness, shape index, and length/ width)wasutilized,resultinginthede finitionandclassificationoftenhabitatclasses:Forest/Woodland,Riparian Forest, Open Wood Savanna, Open Wood Savanna subject to prolonged flooding, Open Grass Savanna, Agriculture, Swampy Grassland, Swampy Mixed Savanna, Vazantes, and Water. This classification was achieved with an overall accuracy of 80% for the entire Pantanal. The produced habitat spatial distribution maps will provide vital information for determining refuge zones for terrestrial species, and connectivity of aquatic habitats during the dry season, as well as providing crucial baseline data to aid in monitoring changes in the region, and to help de fine conservation strategies for habitat in this wetland.	
Palavras-Chave: 	ALOS/PALSAR; ENVISAT/ASAR; Habitat mapping; K&C Initiative; RADARSAT-2.	
Thesaurus Nal: 	Pantanal; wetlands.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Pantanal (CPAP)	
Exemplares: 	CPAP - (59054-1) - UPC - AP - PP - SP17919 -  - 17919 - DIS